The system could be made to crash or run programs as an administrator.

==========================================================================
Ubuntu Security Notice USN-2198-1
May 06, 2014
linux vulnerability
==========================================================================
A security issue affects these releases of Ubuntu and its derivatives:
- Ubuntu 12.04 LTS
Summary:
The system could be made to crash or run programs as an administrator.
Software Description:
- linux: Linux kernel
Details:
A flaw was discovered in the Linux kernel's pseudo tty (pty) device. An
unprivileged user could exploit this flaw to cause a denial of service
(system crash) or potentially gain administrator privileges.
Update instructions:
The problem can be corrected by updating your system to the following
package versions:
Ubuntu 12.04 LTS:
linux-image-3.2.0-61-generic 3.2.0-61.93
linux-image-3.2.0-61-generic-pae 3.2.0-61.93
linux-image-3.2.0-61-highbank 3.2.0-61.93
linux-image-3.2.0-61-omap 3.2.0-61.93
linux-image-3.2.0-61-powerpc-smp 3.2.0-61.93
linux-image-3.2.0-61-powerpc64-smp 3.2.0-61.93
linux-image-3.2.0-61-virtual 3.2.0-61.93
After a standard system update you need to reboot your computer to make
all the necessary changes.
ATTENTION: Due to an unavoidable ABI change the kernel updates have
been given a new version number, which requires you to recompile and
reinstall all third party kernel modules you might have installed. If
you use linux-restricted-modules, you have to update that package as
well to get modules which work with the new kernel version. Unless you
manually uninstalled the standard kernel metapackages (e.g. linux-generic,
linux-server, linux-powerpc), a standard system upgrade will automatically
perform this as well.
References:
http://www.ubuntu.com/usn/usn-2198-1
CVE-2014-0196
Package Information:
https://launchpad.net/ubuntu/+source/linux/3.2.0-61.93